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Convert Python Dict to JavaScript Object Online - Free, Local & Instant

Instant Python Dict (.py) to JavaScript Object (.js) converter. 100% client-side processing in your browser RAM — zero file uploads, full privacy, drag & drop or paste raw text.

Python Dict → JavaScript Object ⇄ Swap (JavaScript Object → Python Dict)

Technical Comparison: Python Dict vs JavaScript Object

Data & Dev Config
Specification Python Dict (Source) JavaScript Object (Target)
Full Specification Python Dictionary & List Literal ES Module JavaScript Object Literal
File Extension & MIME .py (text/x-python) .js (text/javascript)
Data Typing Model Python native True, False, None, dict {}, and list [] literals Unquoted identifier keys, single-quoted strings, ES export default
Structure & Hierarchy Nested dictionaries and lists ready for Python scripts Arbitrarily nested JS objects and arrays
Comments Support Supported (# comment) Supported (// and /* */)
Primary Ecosystem Django settings, FastAPI fixtures, data science notebooks, ETL scripts Vite/Webpack configs, TypeScript/JS mock data, Next.js constants

Python Dict to JavaScript Object — Before & After Example

Before (Python Dict Input)
data = [
  {
    "id": 1,
    "name": "Alice Johnson",
    "email": "alice@example.com",
    "role": "admin",
    "active": True,
    "score": 98.5,
    "address": {
      "city": "Berlin",
      "country": "DE",
    },
  },
  {
    "id": 2,
    "name": "Bob Smith",
    "email": "bob@example.com",
    "role": "editor",
    "active": False,
    "score": 87,
    "address": {
      "city": "Austin",
      "country": "US",
    },
  },
  {
    "id": 3,
    "name": "Chiara Rossi",
    "email": "chiara@example.com",
    "role": "viewer",
    "active": True,
    "score": 91.25,
    "address": {
      "city": "Milan",
      "country": "IT",
    },
  },
]
After (JavaScript Object Output)
const data = [
  {
    id: 1,
    name: 'Alice Johnson',
    email: 'alice@example.com',
    role: 'admin',
    active: true,
    score: 98.5,
    address: {
      city: 'Berlin',
      country: 'DE',
    },
  },
  {
    id: 2,
    name: 'Bob Smith',
    email: 'bob@example.com',
    role: 'editor',
    active: false,
    score: 87,
    address: {
      city: 'Austin',
      country: 'US',
    },
  },
  {
    id: 3,
    name: 'Chiara Rossi',
    email: 'chiara@example.com',
    role: 'viewer',
    active: true,
    score: 91.25,
    address: {
      city: 'Milan',
      country: 'IT',
    },
  },
];

export default data;

Frequently Asked Questions: Python Dict to JavaScript Object

How do I convert Python Dict to JavaScript Object online without uploading sensitive files? ▾

Paste your Python Dict data or drag and drop a .py file into the converter above. ZeroUpload parses Python Dict and serializes JavaScript Object 100% inside your browser RAM using local JavaScript—no bytes are ever sent to an external server.

How are nested objects or tabular columns mapped between Python Dict and JavaScript Object? ▾

When converting hierarchical structures (Nested dictionaries and lists ready for Python scripts) and tabular or config formats (Arbitrarily nested JS objects and arrays), our engine automatically flattens or unflattens dot-separated keys (such as address.city) and preserves numbers, booleans, arrays, and null values.

Is this Python Dict to JavaScript Object converter free for commercial and production config files? ▾

Yes. The tool is completely free, requires no account or API key, and works offline once loaded. Because execution happens in local memory, it is safe for proprietary Python Dict, database exports, and production secrets.

Can I convert JavaScript Object back to Python Dict? ▾

Yes! Click the "Swap (JavaScript Object → Python Dict)" button at the top of the workspace or use the reverse converter link at the bottom of this page for bidirectional conversion.